Fixture mounting



Dec. 1, 1931. E. G. APPLETON FIXTURE MOUNTING Filed Apr-i1 25. 192'?V llllll,

@@MW l Patented Dee. 1931 ERNsT e. APPLETON, crammed-ILLINOIS, AssIGNoR 'ro RoAoH-APPLETONMANU- PAA-TENT orFlcE FACTURIN G" COMPANY, OF CIFIQIAGO, ILLINOIS, ACQRPORATION OF ILLINOIS FIXTURE MOUNTING Applicatonfled April 25, 1927. SeraI'NO. 186,500.y

lhe present invention relates to fixture mountings.

It is common practice vin theelectric wiring f of houses `to'provide hanger4 members or construction cleats attached to adjacent joists or studs, which hangersfor cleats adjustably support outlet boxes 4or switch b oxesiwhich *provide attaching. meansk for chandeliers, droplights and the like, ortofprovi-de'hous-` ingsfor switching mechanism; VIt is common tje-provide a fixture stud having a portion engaging the bar Or-cleatreferred ,to, which iXturestud has ascrewthreaded 1portion for the reception of a nut whichmay be turned to hold the box in tight frictional engagement Further ob] tion proceeds'. Y Referring to the drawings-l M. f .c

Figure 1 is a plan view showing a bar hanger,'an voutlet4 box and a fixturestud'embodyf ing the principles of the present invention; Figure 2 is a sectional view taken along the plane indicated by the arrows 2-2` of Figl and plan, respectively, of ablank from which ure 1 Y Figure 3 is a sectional view takenalong the plane indicated by the arrows 3*-3 of F igurel' W Figures 4 and 5 areviews in side elevation may be formed the fixture stud embodying the principles of the present invention;

Figure 6 is a view f the blank above referred to after it has been subjected to a drawing operation in the method involved in thel present invention; f

' Figures 7 and 8 are views similar to Figure- 6 but showingvthe blank after successive drawing operations;

Figures 9 and 10 are views intop plan Y land side elevation, respectively, showing the blank after a still further operation, which operation is known as bumping,

Figures 11 and 12 are views similar to Figures 9.and 10, respectively, but showing the blank after excess metal has been trimmed therefrom;A n

Figurevlxis a view similar to Figure 12 but afterl `the lugs have been i subjected to a straightening operation;

yFigures l14 and 15 areelevationaly views taken alongplanes at right angles to one another, illustratingV the blank after the lugsV haie been subjected toa bending operation; all j Figure `16 represents the finished fixture stud after said stud has beenscrew-threaded. v Referring first towFigures 1, 2 and 3, the numeral 20 indicates a bar hanger which may have the usual form. Said bar hanger adjustably supports the `outlet box 21, which may beof the'usu'al form'. Slidably disposed upon the bar hanger 20 isthe fixture stud'22,

1 which fixture stud embodies the principles ofthe present invention. Said ystud is pro vided with the screw-threaded shank portion ,23 and the fears 24e-24, which arey folded over toward one another to form a recess for the reception of the bar hanger 20L The outlet box 21 isprovided with the central aperture 25 of sufiicient Vdiameter to admit the fixture stud 22, said studbeing provided with flanges 25a-25atting within said aperture 25. A nut 26`is provided, adapted to engage the screw-threaded exterior ofthe shank V23 ofthe fixture stud 22, The nut illustrated has side flanges 27 adaptedto engage theunderl sideofthe outlet box 2l, whereby to'hold the outlet :box 21'andthe ears 24-24 of the xturestud 22`inti`ght frietional engagement Y with'the bar hanger 20.

' As indicated above, the presentinvention` concerns itself with the" fixture stud 22' and* relztesto methods of making said fixture stu v According toV the 'present invention, said fixture? stud is manufactured from rsheet metal. In a practical embodiment Vofthe present inventioina piece of sheet metalis .blanked and fdrawnin one operation, the blank being indicatedin Figures 4 and 5 and the result of therirst drawing operation being indicated infFigure 6. It will be noted that according to Figure 6 the flat material is swedged into a cup form. The cup form of the blank is subjected to a further drawing operation, or operations, to produce the forms shown in Figures 7 and S, in which the diameter of the cup portion of the blank is reduced and the length thereof increased. It will be noted from an inspection of Figures 6, 7 and 8 that the drawing operations tend to shape the metal of the blank to form the shank 23, the ears 24 and the flanges 25a.

Figures 9 and 10 show the structure after the shank portion 23 has had its end squared up and the ears 2li-24 turned closer to paral lcl relationship with the axis of the shank Figuresll and l2 illustrate thev next step in the formation of the fixture stud, the corners 28s-2S being trimmed out,'but leaving the flanges a, which flanges 25a are adapted to fit more orless closely within the central aperture 25 in the outlet box 2l.

Figure 13 shows a development from the form of the blank as it appears in Figures ll and l2, the ears QL-Mbeing straightened.

'Figures lll and l5 show a still further development, the ears 24-24 being bent toward one another to provide a perforation 30 for receiving the bar hanger 20.

Figure 1G shows the finished fixture stud, the shank 23 of said. stud being screw-threaded for the reception of the nut 26.

The present invention provides a fixture stud which may be manufactured in mass production at an exceedingly low cost. Said fixture stud, moreover, has'all thestrength necessary in service. In view of the fact, further, thatit is made from relatively thin sheet metal which is subjected during the process of manufacture to drawing operations, the discovery of hidden defects is very greatly expedited.

Many modifications of the present invention will occur to those skilled in the art. It is intended to cover all such modifications that fall within the cope of the appended claims.

What is claimed is r- *i l. A fixture stud adapted for cooperation with the usual outlet box and bar hanger, comprising a cup-shaped member screwthreaded on its exterior, said cup-shaped member having a shank, arcuate flanges disposed Aat one extremity of said shank, and ears disposed at said extremity of said shank and between said arcuate portions, said ears being bent over toward one another to form a recess .for the reception of a bar hanger.

2. A fixture stud comprising an integral sheet metal member having the form of a cup having a cylindrical shank and a bottom portion and projecting bendable ears, said ears extending toward one another from the diametrical regions of said cylindrical shank and providing a recess between said ears and said shank.

3. A fixture stud comprising a sheet metal member of cup-shaped form having a cylindrical shank, flanges extending outwardly from said shank and ears extending from said shank between said flanges, said ears extending toward one another and forming a recess between said ears and said flanges.

4t. A fixture stud comprising a sheet metal member having a cylindrical portion, flanges and ears extending therefrom at one extremity thereof, said flanges being diametrically opposed from one another -and lying in a single plane, said flanges and said ears being alternately disposed around said shank, said ears having their end portions bent into substantial parallelism with said flanges.

5. In combination, a supporting bar, an outlet box and a fixture stud, said outlet box having anaperture therethrough for the reception of said stud, said stud comprising a cup-shaped member having a cylindrical shank, flanges extending outwardly from Said shank and fitting within said aperture, and ears extending from said shank between said flanges, said ears extending toward one another and'forming a recess between said ears and said flanges.

6. In combination, a. supporting bar, an outlet box and a fixture stud, said outlet box having an aperture for the reception of said stud, said stud comprising a member having a screw-threaded cylindrical portion, flanges and ears extendingtherefrom "at one extremity thereof, said flanges being diametrically Opposed to one another, lying in a single plane and fitting within said aperture, said flanges and said ears being alternately disposed around said shank, said ears having their end portions bent into substantial parallelism with said flanges.

' Signed at Chicago, Illinois, this 15th day of April, 1927.

ERNST G. APPLETON. 

